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In 1944, Mandelbrot returned to Paris, studied at the [[Lycée du Parc]] in [[Lyon]], and in 1945 to 1947 attended the [[École Polytechnique]], where he studied under [[Gaston Julia]] and [[Paul Lévy (mathematician)|Paul Lévy]]. From 1947 to 1949 he studied at California Institute of Technology, where he earned a master's degree in aeronautics.<ref>Lesmoir-Gordon, Nigel (17 October 2010). "Benoît Mandelbrot obituary". The Guardian. London. Archived from the original on 17 September 2013. Retrieved 17 October 2010.</ref> Returning to France, he obtained his [[Doctor of Philosophy|PhD degree]] in Mathematical Sciences at the [[University of Paris]] in 1952.<ref name="wolf" />

In 1944, Mandelbrot returned to Paris, studied at the [[Lycée du Parc]] in [[Lyon]], and in 1945 to 1947 attended the [[École Polytechnique]], where he studied under [[Gaston Julia]] and [[Paul Lévy (mathematician)|Paul Lévy]]. From 1947 to 1949 he studied at California Institute of Technology, where he earned a master's degree in aeronautics.<ref name="guardian_obit">{{cite news |url=https://www.theguardian.com/science/2010/oct/17/benoit-mandelbrot-obituary |title=Benoît Mandelbrot obituary |last=Lesmoir-Gordon |first=Nigel |date=17 October 2010 |work=[[The Guardian]] |access-date=17 October 2010 |location=London |archive-date=17 September 2013 |archive-url=https://web.archive.org/web/20130917122909/http://www.theguardian.com/science/2010/oct/17/benoit-mandelbrot-obituary |url-status=live }}</ref> Returning to France, he obtained his [[Doctor of Philosophy|PhD degree]] in Mathematical Sciences at the [[University of Paris]] in 1952.<ref name="wolf" />